xcode 在 Swift 中动画对象？
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Animate objects in Swift?
提问by Benr783
In swift, I am transitioning an object in to the view, and I need it to slide in, or fade in. How can I obtain this type of animation in my program?
在 swift 中，我正在将一个对象转换到视图中，我需要它滑入或淡入。如何在我的程序中获得这种类型的动画？
I have all my view elements made programmatically without IB (Interface Builder)
我的所有视图元素都是在没有 IB（接口生成器）的情况下以编程方式制作的
Is there documentation I can look at for reference? I could not find any.
是否有我可以查看的文档以供参考？我找不到任何。
采纳答案by user3720631
Apples Core animation seen here https://developer.apple.com/library/Mac/DOCUMENTATION/Cocoa/Conceptual/CoreAnimation_guide/Introduction/Introduction.htmlits very fun. youtube it
在这里看到的苹果核心动画https://developer.apple.com/library/Mac/DOCUMENTATION/Cocoa/Conceptual/CoreAnimation_guide/Introduction/Introduction.html非常有趣。优酷吧
回答by LordParsley
I'm used to using [UIView animateWithDuration ...], but I found it a bit tricky switching the block syntax over to Swift at first. Here's a quick lazy code:
我习惯使用 [UIView animateWithDuration ...]，但我发现一开始将块语法切换到 Swift 有点棘手。这是一个快速的懒惰代码：
view.alpha = 0.0
UIView.animateWithDuration(0.25, animations: {
view.alpha = 1.0
}, completion: {
(value: Bool) in
println(">>> Animation done.")
})
回答by MathewS
Or to animate the position appearing from the left of the screen:
或者为出现在屏幕左侧的位置设置动画：
// some variables for the UIView
let width = 200
let height = 100
let yPosition = 10
// create view and position it offscreen to the left
let view = UIView()
// you could have also used the new more verbose Swift way of making a CGRect:
// CGRect(x: xValue, y: yValue, width: widthValue, height: heightValue)
view.frame = CGRectMake(-width, yPosition, width, height)
view.backgroundColor = UIColor.blueColor() // etc...
// animation position over 1.0 second duration
UIView.animateWithDuration(1.0, animations: {
view.frame = CGRectMake(0, yPosition, width, height)
})
If you're completely new to the UIView animation APIs I wrote post that covers a bunch of animation options in swift here: http://mathewsanders.com/prototyping-iOS-iPhone-iPad-animations-in-swift/
如果您完全不熟悉 UIView 动画 API，我写了一篇文章，其中涵盖了一系列 swift 动画选项：http: //mathewsanders.com/prototyping-iOS-iPhone-iPad-animations-in-swift/
回答by Tony Franzis
Swift 3 & 4 Please Add necessary objects like tableView
Swift 3 & 4 请添加必要的对象，如 tableView
import UIKit
class SecondViewController: UIViewController,UITableViewDelegate,UITableViewDataSource {
@IBOutlet var tabl: UITableView!
var name = ["tony","abu"]
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return name.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell()
cell.textLabel?.text = name[indexPath.row]
return cell
}
override func viewWillAppear(_ animated: Bool) {
tabl.center.x = self.view.frame.width/5
UIView.animate(withDuration: 1.0, delay: 0, usingSpringWithDamping: 1.0, initialSpringVelocity:0.45, options: [], animations: ({
self.tabl.center.x = self.view.frame.width/3
//self.buttonAction.center.x = self.view.frame.width/2
}), completion: nil)
}
}
